What is the principle of conservation of mass?
5.P.2.2

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Physics
•
5th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The principle of conservation of mass states that mass is neither created nor destroyed in a chemical reaction or physical change. The total mass of the substances involved remains constant.
2.
FLASHCARD QUESTION
Front
How do you calculate the total weight of multiple objects?
Back
To calculate the total weight of multiple objects, multiply the weight of one object by the number of objects. For example, if one crayon weighs 5 grams and there are 10 crayons, the total weight is 5 grams x 10 = 50 grams.
3.
FLASHCARD QUESTION
Front
What happens to the mass of water when it freezes?
Back
The mass of water remains the same when it freezes. For example, 200 grams of water will still weigh 200 grams when it becomes ice.
4.
FLASHCARD QUESTION
Front
If a rock weighing 60 grams is broken into two pieces, what can be said about the weights of the pieces?
Back
The weights of the two pieces must add up to the original weight of the rock, which is 60 grams. Possible combinations could be 30 grams and 30 grams, or any other pair that sums to 60 grams.
5.
FLASHCARD QUESTION
Front
What is the weight of a box of candles if the total weight is 30 ounces and there are 5 candles inside?
Back
The total weight of the box of candles is 30 ounces, regardless of how many candles are inside. The weight does not change when the candles melt.
6.
FLASHCARD QUESTION
Front
What is the significance of measuring mass in grams and ounces?
Back
Grams and ounces are units of mass. Grams are part of the metric system, while ounces are part of the imperial system. Understanding both units is important for conversions and comparisons.
7.
FLASHCARD QUESTION
Front
How does melting affect the mass of a solid object?
Back
Melting does not change the mass of a solid object. For example, when candles melt, their mass remains the same, but their shape and state change.
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